Supplementary track.



Patented June 5, I900 INVENTOR. CQZ/WMI/ BY m {W TTORNEYS 0 CROSBY SUPPLEMENTARY TRACK (Apphcatlon filed Aug 26, 1898) WITNEsSES (No Model.)

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UNITED STATES PATENT OFFICE.

OLIVER CROSBY, OF ST. PAUL, MINNESOTA.

SUPP'LEMENTARYTRACK.

SPECIFICATION forming part of Letters latent No. 650,927, dated June 5, 1900.

V Application filed August 26,1898. Serial No. 689,619. (No model.)

To all whom it may concern:

Be it known that I, OLIVER CRosBY, a citi- Zen of the United States, residing at St. Paul,

Ramsey county, Minnesota, have invented an ment of rails laid upon flat-cars. Fig. 2 is an end view thereof, and Fig. 3 is a side elevation.

In the drawings, A represents a fiat-car, and 2 the wheels thereof, runnin g upon the rails 3. Arranged upon the top of the flat-cars is my supplementary track. This consists of a series of sections of overlapping rails 4: and 5, connected by tie-rod 6 and secured to tics 7, resting transversely upon the flat-cars. The

- distance between the rails 5, as will be seen,

is less than between the rails 4, so that the rails may overlap, as shown in Fig. 1.

8 are the truck-wheels, which are adapted to run upon rails 4 and 5 and which carry a derrick or other desired apparatus. (Not shown.) The wheels 8 are formed with a central flange 9, so that when traveling upon the rails 4 the outer edge of the wheel will be the bearing-surface and when traveling upon the rails 5 the inner edge of the wheel will be the bearing-surface.

In use a supplementary track consisting of two or more sections is laid upon the flat-cars, as shown in Fig. 1. As a derrick or other apparatus is transported along the supplementary track the rear section may be lifted and placed in connection with the forward section. A series of two sections may thus be used to constitute the supplementary track, regardless of the length of the train of flatcars. By having the track formed of independent sections it will also be evident that the track will easily adapt itself to the movement of the flat-cars and to the angles assumed by the cars passing around curves.

WVhile the track is shown laid upon flatcars, it may be laid upon canal-boats, &c.

I claim-- 1. A track consisting of a series of independent portable track-sections, said sections being out of line with each other, and the ends of the rails of each section overlapping the ends of both rails of the next section.

2. A track consisting of a series of independent portable track-sections, the gage of each alternate sect-ion being narrower than that of the adjacent sections, whereby the rails of the narrower section fit between those of the wider.

3. A track consisting of a series of independent portable track-sections, the rails of each section being suitably secured together, and the gage of each alternate section being narrower or broader than that of the adjacent sections, so that both rails of the narrow section will stand between the rails of the wider.

In testimony whereof I alfix my signature in the presence of two witnesses.

OLIVER CROSBY. 

